System Log For Triggers
Is there a system log file which can be checked to see the histroy of triggers. I am trying to debug a trigger that is not executing when it should.
View Complete Forum Thread with Replies
See Related Forum Messages: Follow the Links Below to View Complete Thread
Using Triggers With PHP
I can't seem to make this work. I've been feeding this into a MySQLi object: DELIMITER | CREATE TRIGGER trigger AFTER INSERT ON msp_account FOR EACH ROW BEGIN INSERT INTO log_table_change ( table, table_id, user ) VALUES ( 'test_table', NEW.msp_account_id 'test_user' ) END | ... and using the multi_query() method, But never seems to work. No errors, just no work.
DDL Triggers
Is it possible to create DDL triggers in MySQL? For example: CREATE TRIGGER my_trigger AFTER ALTER ON my_table
Triggers
I need to update some fields of the record before it is inserted (created) in database. Is there any way to use triggers or something else with similar functionality in MySql 4.x ?
Triggers
I need to create a trigger that notifies me that a table I have created has been updated or added to. Basiccally I am using a website to send details to my database but I need to know when data has been submitted.
Triggers
I have MYSQL on a Windows server and I'd like to send an email to a user when a new row is created that has a certain value. Can anyone help? Are there commands that will also trigger a vbscript procedure?
Triggers
I am attempting to make a trigger work that I used on another project with another database. Whenever I attempt to type in an example to get started the command mysql> delimiter // --> yields the prompt for a subsequent part of the command unlike what is shown in the examples in the online manual and the triggers shown in this forum. What am I doing wrong? Secondly, Is there a way to define an on insert trigger that will not insert the row if specific conditions are met? Triggers don't return values so I can't return null. Is there a way to accomplish this?
Triggers
I see there is a limitation with triggers about refering to table names. So if I wanted to have a trigger on 1 table to update another table, I'm assuming this isn't possible? Bascially it's a reload project. When one table's flag is set to released, I want to add a record into a Reload table, that has some record information from the updated table. A process is reading the Reload table and when it has records it reloads some data based on the records.
Triggers
I am using an Update trigger and I need to pull a variable to place in my log table out of the update query. I noticed you can select from "inserted" and "deleted", is "updated" also a valid table to select from? Is there documentation on this somewhere.
Triggers
Ive been using SQL: Beginner's Guide Second Edition, and have been doing the projects that go along with each module. I've had trouble with the following command and was just wondering what I could to do troubleshoot. CREATE TRIGGER InsertLog AFTER INSERT ON Artists REFERENCING NEW ROW AS New FOR EACH ROW BEGIN ATOMIC INSERT INTO ArtistLog ( ActionType, ArtistID ) VALUES ( 'INSERT', New.ArtistID ); END ; Both tables were created with no problem. The error I kept recieving was error 1064 (42000) saying that I had some syntax error near the REFERENCING line (line 3). There was also an error saying I had a syntax error near END.
Question About Triggers
I want to install a trigger that updates a total (subtracting 1) whenever a row is deleted. Does it make sense to do it the following way? Create Trigger: CREATE TRIGGER trigger_name AFTER DELETE ON table_name FOR EACH ROW SET @rows_deleted = @rows_deleted + 1; Delete Rows: SET @rows_deleted = 0; DELETE FROM table_name WHERE column_name = 3434; UPDATE table_name SET count = (count - @rows_deleted) WHERE id = 767; So instead of issuing an update for each row that's deleted, it records how many were deleted and then issues one update after they're all deleted.
Validating Using Triggers?
If i have a table that includes start_date and end_date, how can i validate this data in the DBMS without using a stored procedure? I have already written the application, i just want to add DBMS validation on new rows that will be inserted so that start_date is always less than or equal to end date.. In oracle i would simply raise an application error in the trigger and then i could assign an error message with it.. I can't seem to find any such ability in mysql.. can i even restrict inserts/updates within triggers in mysql,
Mysql 3.23.58 And Triggers
I know that mysql 3.23.58 does not have triggers but what do to get around that? I am working on a banking project. We have a table for accounts and a table for transactions. The accounts table has a attribute for the balance but everytime there is a transaction the balance needs to be updated to reflect it. How can I accomplish this without triggers?
Table Triggers
How do I create a new trigger for a table that already exists and has data in it? I'm guessing this is not the same as "stored procedures/functions" because the triggers are related to each table. I'm using mysqladministrator and query editor but don't see a trigger editing feature.
While Creating Triggers
I am trying to create a simple trigger by query as: CREATE TRIGGER interactiontrigger AFTER INSERT ON InteractionDetails FOR EACH ROW BEGIN UPDATE LeadDetails SET SalesStage= NEW.SalesStage WHERE Id = NEW.LeadId; END when i execute this query i get the following error as: ERROR 1314 (0A000): Statements like SELECT, INSERT, UPDATE (and others) are not allowed in a FUNCTION
MySQL Triggers
I have to make a site with an e-mail reminder. Is it possible via MySQL to make a trigger when something NOT happens. Like when a subscriber is absent for three days (hasn't logged in) can I make a trigger that reminds him to visit the site?
Triggers / Events
I was wondering is anyone knew how i can set up some sort of job or trigger based on an event that occurs in my db. Basically i have a db that takes periodic entrys. I want to make a script that will fire off an email to a list of people whenever an entry is made. I could write a cron job to run a php script that emails those people every hour or so but thats timeed and inefficnet.
Triggers In MaxDB 7.5*
I have a situation where in my program written in "C" has to wait. Is there a convenient facility to do this in MaxDB. For Ex: calling "C" function from the trigger itself, or waiting for a event in the "C" program and posting such an event from a trigger etc.
Triggers Problems
I am running 5.0.18 and am trying to create a trigger. with the following CREATE TRIGGER updatenumb AFTER INSERT ON childtable BEGIN UPDATE parenttable SET postnumb = (postnumb +1) WHERE childtable.pt_id = parenttable.id END; The table is innoDB with a foreign key reference (to the parent table) When I try I get the following error. ERROR 1064 (42000): You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'BEGIN UPDATE.
Scheduled Triggers
I have a table populated with items which have a state -> valid or invalid. Once a item is checked as invalid it should stay as invalid for a period of 3 days upon which the state should automatically turn to valid. Is there any way of achieving this without manual intervention?? hope the above was clear.
Writing Triggers
I need to write trigger which will update 3-4 table ,with relevant records.The sceneriao is as under.We have 2 databases server.We have set up the replication successfully with these 2 servers for database A .One is the master (MYSQL 4.1) on linux and the second one is slave(MYSQL 5.0) on windows. Now on the slave server we have a another db B which consist of 5 tables.We need to fire a trigger to insert,update,delete records into these 5 tables every time data is replicated to slave.The problem is that not the entire record is to be inserted from the replicated table.Only few coloumns is to be iserted,say col1,col5 , col9 to be inserted in table1;col1,col3,col8 to be insrted in table2 ;col 3,col6,col7 in table3 and so on.I am wondering how to achive this.Please help me in this .Its really very urgent.
Cascade Delete Or Triggers?
Something that annoys me about MySQL is the fact that triggers are not activated when a row is deleted as a result of a cascade delete. I fail to see why this is, but perhaps there is a good reason, or its a bug, who knows. Anyway, I want to use some triggers here and there to ensure the data is as tidy as possible, and remove anything that doesn't need to exist any more (e.g. I have a couple of 1 to 1 relationships that really do need to be two separate tables), but the lack of cascade delete is causing problems. I started replacing one or two of the cascade deletion settings with triggers, to simulate the cascade, and allow the other triggers to work, but as I add more tables and it all gets more complicated its becoming a real nightmare maintaining it, and working out which cascades need to be triggers. My question is this, is there any way at all to get cascades to activate triggers? Or would there be a major performance impact if I just dropped all cascades and replaced them all with triggers?
Triggers/Locking/Constraints
I have two issues. Firstly, I have a table of users and a table of permissions. Is there a way to use a trigger or some kind of locking in InnoDB tables such that the superuser and its permissions cannot be deleted? I also would like to know if it's possible to constrain insertions into a certain table such that one and only one of two fields must be null. In this case, my table of permissions has two foreign keys for each record: a user ID and a group ID. If the permission applies to a user, the group ID should be null, and vice versa. For security reasons, I would greatly prefer if this logic could be put in the database so that I can simply revoke ALTER privileges from the DB user so nothing can be done from PHP.
Triggers To A Remote Database
We make use of a PACS (Picture Archiving and Communication System) and system to store DICOM (Digital Imaging and Communication in Medicine) images (like CT scans, MR images etc.) in our Oncology Center. This PACS system uses mysql as it's native database, in which it stores certain data as date and time of the examination, it uses InnoDB tables. We are building another application around it, which will use data from the PACS tables and will hold additional data in a seperate database in it's own tables. Every study has it's own unique identifier which is stored in the PACS database. Additional data is stored in the additional database, under the same unique identifier to be able to keep track of the data and link it to each other. Now I would like to know if it is possible to add a trigger to the PACS database which will delete the related information in the additional database if a record in the PACS database is dropped. This trigger will have to delete the records in the additional tables before dropping the data in it's own database, so we can maintain a more compact database and don't store data which we cannot link to the PACS system anymore.
Mysqldump Restore Triggers
I have inherited a stone-aged RedHat 8.0 system running mysql 3.23.52 which cannot be upgraded for various reasons I won't go into here. However the powers that be are finally interested in backing this system up, so I have started looking into mysqldump. In the interests of recoverability, I have created a RedHat 9 system running mysql version 3.23.54 which I am now attempting to restore my dump file to. So. To create my dump, I am doing this: # mysqldump --opt --all-databases --user="root" -p > all-databases.dump On the restore system, I do this: # mysql -u root -p < all-databases.dump ...and it ticks along for a while and finally announces: ERROR 1062 at line 6005: Duplicate entry '1' for key 1 Looking at line 6005, it says (line numbers added by me): 6004: LOCK TABLES groups WRITE; 6005: INSERT INTO groups VALUES (0,'Administrators'),(1,'Anonymous'),(2,'File Admin'),(3,'Company'); This does not appear to be a TINYINT problem; the table does not appear to be defined with a TINYINT. I have googled around and the lack of an answer implies I'm doing something trivially incorrect.
Triggers Or Stored Functions
I am developing a membership system wherein every year, the status of all registered members would be changed to something else. I want this function to execute automatically. I think this has something to do with triggers but I can't find a tutorial that can clearly explain how to do it.
Mysql And Triggers/stored Procedures
I have a question regarding the use of triggers. I have difficulties implementing trigger that let's say reacts before/after select statement (select of user), and increments the counter value (of the selected user). Is there a way to achieve this through triggers, or it's not possible?
MySql Triggers And Foreign Keys
I would like to know if MySql supports triggers. I would also like to know if i can cascade updates and deletes on foreign keys. Please supply me with a sample code to create triggers if they exist and for cascading deletes and updates if any.
Can Arrays Be Used In Stored Procedures And Triggers In Mysql?
I was trying to use arrays in stored procedures but it resulted in syntax errors.Is there any way to use arrays in stored procedures. I have one more question,in triggers if we want to check each column of a table if updated ,is there any way that i can write then in a loop. In the example given below I tried to check change for each column in a table.If there are 10 columns then I have to wirte 10 if statements. Is there any way that I list all the columns of the given table with in a trigger and write loop that contain a if statement that works for all the columns. create trigger updata after update on dataid_list for each row BEGIN if NEW.databaseid <>OLD.databaseid then insert into view_changes SET old=OLD.databaseid,new=NEW.databaseid, operation='UPDATE',column_name='databaseid' end if; if NEW.databasename <>OLD.databasename then insert into view_changes set old=OLD.databasename,new=NEW.databasename, operation='UPDATE',column_name='databasename' end if; END;
Socket Programming With Stored Procedures/triggers
I'm currently working on a project where we may need publish/subscribe functionality (ie. a client registers an interest in a certain event, and the server will publish an update notice to the client when that event occurs). One way I was thinking of doing this is to create an AFTER INSERT trigger on the table in question and get it to somehow notify either the middleware (a daemon running on localhost) or the client (a standalone java app running on a remote machine) that a change has occurred. To do this I'd most likely need to write to a socket from within the trigger or stored procedure. Does anyone know if this is possible? I've had a brief look in the MySQL documentation and nothing seems to jump out at me.
Result Sets In Triggers, Stored Procedures, And Functions
I am running MySQL 5.0.27 I need to know how to deal with result sets in pure SQL functions/stored procedures. I will explain: I am working on building a set of triggers for a relational database. Essentially, I have two sets of independent tables, and I want to keep them in sync. I have a set of source tables, and a dynamic number of multiple target tables. I don't want to have to touch the structure of the tables on either side more than I have to, and I want to do it completely in SQL Here is the structure of what I have so far: 7 source tables 3 triggers per table (update, insert, and delete) A stored procedure that gathers all the needed information from all 7 tables, and inserts it into a target middle table that will feed all of the other (multiple sets of) target tables. I have the first set of triggers for the first table done. For changes to this table there is a single record that needs to be inserted into the target (middle) table. Where I am right now is starting in on the triggers for the second table. The kicker for this table is that, for any one change in this table, there will have to be multiple records updated in the target (middle) table. I have written a function that gets passed a key, which it can use to run a select query to return all of the needed rows. This is where what I know how to do breaks down. How do you execute a query and return the result set to be looped on, OR execute a query, build an array by looping on the result set, and then return the array? I have done this a lot using other programming languages, but this is the first time I've wanted to do something like this in pure SQL.
Why Dont Shared Hosting Accounts Provide Stored Procedures And Triggers?
i am searching for 3 days now for a reliable, fast hosting company, which supports stored procedures and triggers on mysql5. most of them dont support this, because mysql5 has a design-flaw in which it stores procedures and triggers on a root level-area (tables mysql information_schema). due this logic, most of the hosting companies wont allow you to create/run procedures and triggers. funny, that hosting companies forbid you to use new technologies and methods to build faster.
How Do I Get System Date
I have a Timestamp which shows the Date and Time. I would like to change it to just show the Date. How do I do this using phpMyAdmin?
Getting System Date
I was wondering how to set up table to column to get the system date for a date stamp. Could someone help me with this. I tried date date SYSDATE with no luck
Best Way To Set Up Membership System
My site will have users that sign up and can then become part of multiple groups (think similar to Yahoo Groups or something like that). How would be the best way to set up the database/table structure so queries could be run to find both all the groups that a user is a member of and also get membership lists for each individual group?
System Tables?
Is there documentation on the system tables? I couldn't seem to find anything when I did a search on system tables. I know about the information schema, but I want to know about the tables the information schema uses to build the views it contains.
Registration System
I have my database and HTML forms made. When I click submit to submit the registration it doesnt go to to the database it comes to a page with all of my database stuff on it. Can someone help? I have the page register.html made with the forms on it. When you click on submit its supposed to go to register.php which will send the info to the database. But is doesnt. Here is the register.php code:
System Tables
When I create a new DB it's empty. Are there a base set of system tables / functions and so forth created?
Privilege System
Is there a way to limit update access for a user to a single record? I have a database table that contains various information about people. That information is contained in a record for each person. I want people to have read access to the whole table but update access only to their own record. Is this possible and if so how would I set it up?
Rating System
i want to do a rating system like youtube's where it averages out the total ratings. i'd store each of the ratings per each row and have them seperated by comma's then in my code put them in to an array. i also wanted to store the usernames of the voters in the database in the same fashion (without displaying them though) as above say instead of using cookies (as they can be deleted). would method this be feasible? or would this say overload the database and cause slow down?
Booking System
Hi, does anyone know of a site (tutorialised / open source) that offers a PHP-MySQL Online Booking System (similar to a Hotel Booking System)
Privilege System
Can I change structure on "mysql" database to implement new Privilege System? Views named "user", "host" etc will return old structure style.
System Variable
i am connected to the server and i build some tables etc etc. everything is fine. i run the command "show variables". it executes fine and shows me the values of all the variables on the server. now if i try and change the value of the variable tmpdir using the set command, it tells me unknown "error 1193: system variable tmpdir". help needed here........ another point, the variable "tmpdir", points to the dir c:/windows/temp. i put a text file in that dir and try to load some data from that file into a table, and i get an error "file not found".
Ranking System
I've made a forum and i want to have a ranking system with it. I managed to display a postcount but i also want a few images to be displayed, like if you have made more then 50 posts, it displays 50.jpg or something, how can i accomplish this, in another way then just str_replace()ing all the number of posts? And how do i display 2, like if you have 50 posts, 50.jpg and if you have 60 posts, 60.jpg.
System Variable.
i am running mysql version 4.0.16-nt. now, i am connected to the server and i build some tables etc etc. everything is fine. i run the command "show variables". it executes fine and shows me the values of all the variables on the server. now if i try and change the value of the variable tmpdir using the set command, it tells me unknown "error 1193: system variable tmpdir". help needed here........ another point, the variable "tmpdir", points to the dir c:/windows/temp. i put a text file in that dir and try to load some data from that file into a table, and i get an error "file not found".
|
TRACKER
